SOHC.co.uk Forums > The Black Bomber Board
1969 CL450 US Barn Find Restoration
MrDavo:
Many thanks for the photos James, I'll check against my bike later to see if the mystery wire was green when it came out of the loom before a black piece got spliced on. There is also an unfused red/white to the rectifier, I need to check its not that. Confusingly I can't see the -ve wire on the blue bike, that's the same battery that I've bought, mine is starting to look very much like yours now. Have you ever ridden either of them, if so what was it like?
'REGURATOR' on the wiring diagram made me laugh.
Pics of the red bike with the tank off are interesting for the cable routing, for example my clutch cable is all on the left at the moment, yours crosses over above the frame tube to come out on the right side of the tank at the steering head.
Edit: I just looked at the parts manual, superbly drawn as ever it shows the wiring arrangement really well, with the extra negative wire visible as well as the arrangement on the positive side. I did technical drawing at school, and really appreciate a good parts book.
JamesH:
Dave, if you want I can properly scan the wiring diagram at work tomorrow and send it to you as an A3 PDF to print out if that helps?
In terms of riding - i’ve ridden the red bike before pulling the tank off (have a red paint set from Menno here and done - but want to deep clean the bike first). It was a hoot to ride - you’ll love it.
But, I’m 6’3†and 16 stone (big boned) so I probably looked like a fat bird riding a kids bike
MrDavo:
--- Quote --- I probably looked like a fat bird riding a kids bike
--- End quote ---
Haha! (tempted to say LOL but that triggers some folk on here ;) ) I know what you mean, I'm 6 foot and haven't had a bike this small in years. It sounds fun though.
Yes if you can send me a pm with the pdf as a link if you can host it somewhere, or attachment if the technology allows, that would be great, I can print it out and keep it in the garage. failing that I can pm you my email address so you can attach it to an email. My Clymer manual has a couple of wiring diagrams for CB450 models but they aren't 100% correct for my bike.
I had another look at my wiring, and on the +ve side I can see the red fused supply to the loom, the red feed from the regulator and the cable to the starter relay, as it should be. The mystery earth wire has no sign of green on it, it comes out of the cable black, then confusingly got spliced with a repair piece in red, see the photo. Red and black make sense for + and -, what gets really confusing is that further up the loom, feed wires are black and earth wires are green, it beats me why Honda weren't consistent.
MrDavo:
Nothing to take a picture of really, but I reached a milestone today- after making an earth wire to the handlebars and connecting up the new battery, I pressed the starter button.
The engine span, and there were sparks at the new plugs!
Next up is to rebuild the carbs, then we are really close to attempting to start her up.
MrDavo:
News flash - she runs!
Early attempts failed miserably, despite fat blue sparks, then I checked the float bowls and found them empty! The repair kit float needles are slightly different, I put the originals back in and got the bowls to fill, with a bit of fiddling with the float tabs. One is new, the original one is bent to buggery and will be replaced.
With fuel in the carbs I tried again and, probably for the first time since she had metallic purple paint and pullback bars, back in the seventies I think, she fired up!
Little smoke, no tick over yet but the settings were just a guess for now.
There is a video, when I work out how to work YouTube i’ll post a link to it. We’re having a bottle of bubbly left over from the wife’s birthday party to celebrate :)
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